Okay, so I’ve been having this issue way back since UE 4.8 but never thought much of it until I learned to make a game in ue4. But every time I try to build the lighting The editor stops responding at “starting up Swarm connection” reaches 100%, I open up swarm and find this in the log: **13:15:23…

HI Lord C, This was a known issue with 4.9 that was remedied in 4.10. There were any number of reasons that this could cause the light build to not complete properly even though it showed 100% completion in the log. It is recommended to update your engine version in this instance. Thank you! Tim …

UE 4.9 hangs on building lighting, "starting swarm connection 100%"

Development Rendering

anonymous_user_904fd948 (anonymous_user_904fd948) February 10, 2016, 9:46pm 11

Yeah, it’s using port 8008: